Aeolus (ruler of the 4 winds in Greek mythology) is a giant stringed musical instrument, an acoustic and optical pavilion designed to make audible the silent shifting patterns of the wind and to visually amplify the ever-changing sky. ... a giant aeolian harp, designed to resonate and sing with the wind without any electrical power or amplification. Vibrations in strings attached to some of the tubes are transferred through skins covering the tops and projected... http://lukejerram.com/aeolus